USN-2380-1: Bash vulnerabilities

bash vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

Ubuntu 14.04 LTS

Ubuntu 12.04 LTS

Ubuntu 10.04 LTS

Summary

Several security issues were fixed in Bash.

Software Description

bash - GNU Bourne Again SHell

Details

Michal Zalewski discovered that Bash incorrectly handled parsing certain
function definitions. If an attacker were able to create an environment
variable containing a function definition with a very specific name, these
issues could possibly be used to bypass certain environment restrictions
and execute arbitrary code. (CVE-2014-6277, CVE-2014-6278)

Please note that the previous Bash security update, USN-2364-1, includes
a hardening measure that prevents these issues from being used in a
Shellshock attack.

Update instructions

The problem can be corrected by updating your system to the following package versions: